Echinomastus unguispinus var. minimus A.B.Lau in Kakteen And. Sukk. 34: 206. 1983.

Nomenclatural References

• person : Alfred Bernhard Lau (1928-2007) Based on occurrence of standard abbreviation 'A.B.Lau' in the authors string.
• database : The Plant List version 1.0, record: kew-2783144
• database : The Plant List version 1.1, record: kew-2783144